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http://dx.doi.org/10.9711/KTAJ.2016.18.6.557

A numerical study on squeezing of overstressed rock around deep tunnels  

Lee, Kun-Chai (Dept. of Natural Resources and Env. Engr., Hanyang University)
Moon, Hyun-Koo (Dept. of Natural Resources and Env. Engr., Hanyang University)
Publication Information
Journal of Korean Tunnelling and Underground Space Association / v.18, no.6, 2016 , pp. 557-568 More about this Journal
Abstract
Squeezing is a phenomenon that may occur in deep tunneling and could bring about a large plastic deformation, tunnel closure and collapse of tunnel supports. Therefore, quantitative estimations of deformation and stress from squeezing and its possibility are necessary for establishment of a rational tunneling method. This study carried out three dimensional numerical analyses using a strain softening model in order to simulate the behaviour of squeezing and to estimate deformation and yield area around tunnels quantitatively. Numerical analyses were performed for 42 cases of various stress and strength conditions. As a result, the maximum tangential stress and strength of rock mass ratio could estimate plastic deformation and yield depth around tunnels and equations of relations between them were proposed.
Keywords
Squeezing; Deep tunnel; Strain softening model; Numerical analysis;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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1 Park, K.-H., Kim, Y.-J. (2006). "Analytical solution for a circular opening in an elastic. brittle. plastic rock", International Journal of Rock Mechanics & Mining Sciences, Vol. 43, No. 4, pp. 616-622.   DOI
2 Ramoni, M., Anagnostou, G. (2008). TBM drives in squeezing rock - Shield-rock interaction. In Building underground for the future, pp. 163-172, Montecarlo, Monaco.
3 Schubert, W. (1996). "Dealing with squeezing conditions in alpine tunnels", Rock Mech Rock Eng, Vol. 29, No. 3, pp. 145-153.   DOI
4 Sharan, S.K. (2003). Elastic.brittle.plastic analysis of circular openings in Hoek. Brown media. Int. J. Rock Mech. Min. Sci., Vol. 40, No. 6, pp. 817-824.   DOI
5 Singh, B., Jethwa, J., Dube, A., Singh, B. (1992). "Correlation between observed support pressure and rock mass quality", Tunnelling Underground Space Technol., Vol. 7, No. 1, pp. 59-74.   DOI
6 Steiner, W. (1996). "Tunnelling in squeezing rocks: Case histories", Rock Mech. Rock Eng., Vol. 29, No. 4, pp. 211-246.   DOI
7 Vrakas, A., Anagnostou, G. (2016). "Ground response to tunnel re-profiling under heavily squeezing conditions", Rock Mech. Rock Eng., Vol. 49, No. 7, pp. 2753-2762.   DOI
8 Zhao, K., Janutolo, M., Barla, G. (2012). "A Completely 3D model for the simulation of mechanized tunnel excavation", Rock Mech. Rock Eng., Vol. 45, No. 4, pp. 475-497.   DOI
9 Amadei, B. and Stephansson, O. (1997). Rock stress and its measurement. Chapman & Hall.
10 Aydan, O., Akagi, T., Kawamoto, T. (1993). "The Squeezing potential of rocks around tunnels; Theory and Prediction", Rock Mech. Rock Eng., Vol. 26, No. 2, pp. 137-163.   DOI
11 Aydan, O., Akagi, T., Kawamoto, T. (1996). "The Squeezing potential of rock around tunnels: Theory and Prediction with Examples from Japan", Rock Mech. Rock Eng., Vol. 29, No. 3, pp. 125-143.   DOI
12 Barla, G. (1995). "Squeezing rocks in tunnels", ISRM News J., Vol. 2, No. 3&4, pp. 44-49.
13 Barton, N., Lien, R., Lunde, J. (1974). "Engineering classification of rock masses for the design of tunnel support", Rock Mech. Rock Eng., Vol. 6, No. 4, pp. 189-236.
14 Brown, E.T., editor (1981). Rock characterization test and monitoring: ISRM Suggested Methods. Pergamon Press.
15 Brown, E.T., Bray, J.W., Ladanyi, B., Hoek, E. (1983). "Ground response curves for rock tunnels", J. Geotech. Engrg., Vol. 109, No. 1, pp. 15-39.   DOI
16 Cundall, P., Carranza-Torres, C., Hart, R. (2003). A new constitutive model based on the Hoek-Brown criterion. In Brummer, R. et al., editor, FLAC and Numerical Modeling in Geomechanics. 2003 (Proceedings of the 3rd International FLAC Symposium, Sudbury, Ontario, Canada, October 2003), pp. 17-26, Lisse. Balkema.
17 Brown, E.T., Hoek, E. (1978). "Trends in relationships between measured in-situ stresses and depth", Int. J. Rock Mech. Min. Sci. & Geomech. Abstr., Vol. 15, No. 4, pp. 211-215.   DOI
18 Carranza-Torres, C., Fairhurst, C. (1999). "The elastoplastic response of underground excavations in rock masses that satisfy the Hoek. Brown failure criterion", Int. J. Rock Mech. Min. Sci., Vol. 36, No. 6, pp. 777-809.   DOI
19 Chung, S.-K. (2003). "Stability analysis of tunnels excavated in squeezing rock masses", Tunnel and Underground Space, Vol. 13, No. 4, pp. 245-259.
20 Duncan Fama, M.E. (1993). Numerical modelling of yield zones in weak rocks. In Hudson, J. A., editor, Comprehensive Rock Engineering, Vol. 2, pp. 49-75. Pergamon Press.
21 Goel, R., Jethwa, J., Paithankar, A. (1995). "Indian experiences with Q and RMR systems", Tunnelling Underground Space Technol., Vol. 10, No. 1, pp. 97-109.   DOI
22 Hoek, E., Brown, E.T. (1980a). "Empirical strength criterion for rock masses", J. Geotech. Engrg. Div., Vol. 106, No. GT9, pp. 1013-1035.
23 Hoek, E., Brown, E.T. (1980b). Underground Excavations in Rock. Institution of Mining and Metallurgy, London.
24 Hoek, E., Brown, E.T. (1988). The Hoek-Brown failure criterion - a 1988 update. In Curran, J. C., editor, Proceedings of 15th Canadian Rock Mechanics Symposium, pp. 31-38, Toronto.
25 Hoek, E., Marinos, P. (2000). "Predicting tunnel squeezing problems in weak heterogeneous rock masses - part 1, part 2", Tunnels and Tunnelling International, Vol. 32, No. 11, 12, pp. 45-51, 34-36.
26 Hoek, E., Brown, E. T. (1997). "Practical Estimates of Rock Mass Strength", Int. J. Rock Mech. Min. Sci., Vol. 34, No. 8, pp. 1165-1186.   DOI
27 Hoek, E., Carranza-Torres, C., Corkum, B. (2002). Hoek-Brown failure criterion. 2002 Edition. In Proceedings of NARMS-TAC Conference, pp. 267-273, Toronto.
28 Hoek, E., Kaiser, P.K., Bawden, W.F. (1995). Support of Underground Excavations in Hard Rock. A. A. Balkema, Rotterdam.
29 Kovari, K., Staus, J. (1996). "Basic considerations on tunnelling in squeezing ground", Rock Mech. Rock Eng., Vol. 29, No. 4, pp. 203-210.   DOI
30 Lee, K.-C., Moon, H.-K. (2016). "Numerical modeling of brittle failure of the overstressed rock mass around deep tunnel", J. of Korean Tunn. Undergr. Sp. Assoc., Vol. 18, No. 5, pp. 469-485.   DOI
31 Muir Wood, A.M. (1972). "Tunnels for roads and motorways", Q. J. Eng. Geol. Hydrogeol., Vol. 5, No. 1-2, pp. 111-126.   DOI
32 Martin, C.D., Kaiser, P.K., McCreath, D.R. (1999). "Hoek-Brown parameters for predicting the depth of brittle failure around tunnels", Canadian Geotechnical Journal, Vol. 36, pp. 136-151.   DOI
33 Palmstrom, A. (1995). Characterizing rock burst and squeezing by the rock mass index. In International Conference in Design and Construction of Underground Structures, volume 10, New Delhi.
34 Panet, M. (1996). "Two case histories of tunnels through squeezing rocks", Rock Mech. Rock Eng., Vol. 29, No. 3, pp. 155-164.   DOI